Circuit-controlling lock.



T. N. BIRCH.=

CIRCUIT GONTROLLING LOCK.

APPLICATION FILED SEPT. 30, 1912.

1,088,648f- Patented Feb. 24, 1914,

d ATTORNEY.

l y--""1Ho1\iAs N. BIRCH, oF KANSAS CITY, Missoimi.. i

Specicaton of Letters Patent.

CIRCUIT-CONTROLLING LOCK. 4

Patented Feb. 24.1914.

i Application led September 30, 1912. Serial No. 723,137.

To all @honrar mayconcern.'

g mvnthatfIVTHOMAs N. BIRCH, v the Tnite'd. States', residing at kansas y,-'i1ithe county of Jackson and 5 State o Missouri, have invented acertain new and... useful, improvement in Circuit- Controlling-yLocks, `vol.`..which the following is a s i ecification.

yi.iIi-Yentionirelates to improvements in 1circuit@controllinglocks. Itis particularly \\adapted.for= use.incontrolling the igniting 'circuitfof' an automobile so as to prevent Y therunningof `the-.machine by an unauthorized peison. f 1- -5 'f My invention is;l particularly adapted to locks proiiidedv with v tumblers.

In -thef accompanying drawings which illustrates-thepreferred :form of my invention-Figure 1 is a vertical sectional view on th'e'line as'b of.1Fig'. 2 showing a tumbler lock-Hlofthef Yzale type, the key being shown insertediand the Contact moving deviccf'fiforcedlinwardly thereby but not turned into operative-position. Fig. 2 is an outeren'd-y'iewjol!lock. Fig. 3 is a horizontal'--sectiorrongthe line c=cl of Fig. 1. `i t `*cros 'section on the line e-f of 'lalcross section on the Fig. 6 is an arcuate section on'ft "s-j ol' Fig. 5, a portion only 4"or" theiplat 4being shown in section. Fig. u7 isla diagrammatic View of a circuit cbntainiiigmyimproved lock.

Similar' characters' of reference vdesignate similar parts in?y the" diilerent views.

1 designates'fthe casing oi the lock which is Aprefiiblyof cylindrical forni provided i at itiotiei" end with'- a; head 2.

ylVith'intthe*brrel'brbody 1 and secured ff'tlier'ein by any suitable withfgtwo'rows ofifradial holes and 6, said two 'rowsbeing arranged at right angles to each. other' as "shown in f Fig.l 4. Slid'ably mounted in tlielioles 5 'are tumblers Y which are adapted res"p e'ctively to enter radial holesl `8...whichiare'provided in a rotary member 9 mountedinthe ringy In theholes '8 are mountedl Slidabl'e tn 'mblersy10 which f are adapted to "cooperaterespectively 'with' 'the tumbl .position inFig.` 1i, and with tumblers forcing 1such aslhard :nwhen Athe key 1 and 4. Coiled springs 12 are mounted in the h oles 5.and have their outer ends bearing .against the casing 1 and their inner ends against the tumblers '7. Similar coiled springs 13 are similarly mounted in the holes 6 and eil'ect a similar function with respectl to the tumblers 11.

The member 9 has extending longitudirnally through it and communicating with the holes 8, a key hole 14, which is adapted to receive a key 1o, shown in Figs. 1, 3 and ll.

Secured in the rear end of the casing 1 is a head 1G, which is preferably of insulating material such as hard rubber or vulcanized fiber, and which is provided with a central horizontal tubular extension 17 provided on its upper side with a longi-` tudinal slot 18 which extends rearwardly from the forward end of the extension 17 and communicates with a lateral slot 19 which is located at the rear end of the slot 18. y

Slidably mounted in the extension 17 is a key operated device 9.0 which is provided with a laterally extending arm Q1 normally extending through and slidably mounted in the slot 18 and adapted to enter the slot 19 when the member E20 has been forced by the key 15 to the position shown in Figs.'1 and 3. The forward end ot' the member 20 is provided vwith a slot. 22 which is adapted toreceive the key 15. A coiled spring 23 mounted in the extension 17 bears against the rear side of the member 2011er normally said member into the slot 18. Extending through the head 16 is a binding post 211 to which is secured at the inner side of the head 1G a contact 25 adapted to be struck by but normally separated from a contact 2G carried by a spring 27 which is ol' metal and which is secured to abinding post 9.8 which extends through the head 16. The arm 2l has mounted on it, preferably rotatably,V a disk 290tinsulating material,

15 and arm 'Q1 are. ,turned 'to positions at right angles .to 'that shown in` Fig.. 1,

strike thecontact Qlor the Apurpose of closf to strike the spring 2T andlforceijt 'to a position -in-.irhichthc contactQG 'will .ing the circ-uit; in which .said contacts 'Y located.

The contacts .Qiiandilt may .be located in."

a circuit containing any desired mechanism. It' located in a circuit containing a spark producing coil of the automat-ic type, a circuit such as is shown in Fig. 7 may be employed. Referring to this figure, desi gnates an electric battery having. one pole connected by a conductor 31 to the binding post 24. The-other pole is connected by a conductor 32 with a contact 33 which is adapted to be normally in contact with a spring metal strip 34 secured at one end to a post 35 and having mounted on its other end an armature 36 located in the field of a core 37 of an induction coil the primary Winding 38 of which is connected at oneend to the post 35 and at its other end to a conduct-or 39 which is connected to the binding post 28.- The secondary Winding 40 of said induction coil has its ends respectively connected to conductors 41 and 42 which in turn are respectively connected to two contacts 43 and 44, which are separated from each other, but which are near enough to each other to permit the passage of currents I which traverse the secondary circuit. When spend to the tumblers i'.

the spring 27 is moved into position in which the contacts 25 and 26 will be against one another, the primary circuit will be closed until the core 37 by attracting the armature 36 breaks the circuitlat the contact 33. The operation of this automatic circuit breaking mechanism is well known and will need no further description. While the cont-acts 25 and 26 are against one another the current will pass from the battry 30 through conductors 31, binding post 24, lcontact 25, cont-act 26, spring 27,

inding post 28, conductor 39, Winding 38, post 35, spring 34, contact 33, and conduct-or 32 back to the battery 30. The rapid breaking of the primary circuit will produce a series of currents in the secondary circuit thereby effecting the product-ion of sparks between the contacts 43 and 44. It will be understood that these sparks may be employed to ignite charges in an explosive engine not shown.

In the operation of my invention t-he'key 15 is inserted through the key hole 14 and into the slot 22 of the member 20, said member being forced against the pressure of the spring 23. to the position shown in Fig. 1, in which position the arm 21 will be in register' with the slot 19. .It the key 15 is the proper key for the lock it will have forced the t-umblers 10 to the position shown in Fig.vv 1, in which4 position said tuinblors and the t-umblers 7 will have their abutting ends coincident with the periphery o lige rotary inember 9. This position of the tumblers w'ill permit rotation clockwise ot the memberl 9 by the key 15' to a position in which the t-umblers 10 will register respectively witli the tumblers 11 which corre- 7 At this time the roller or disk 29 will have forced the spring 27 to the closed position with the contacts 25 and26 against each other. The key 15 may now be withdrawn, upon which the tumblers 11 will enter the holes 3 and prevent the turning of the member 9. To break the primary circuit it is but necessary now to reinsert key 15 in the key hole 14 and turn the key counter-clockwise to the position shown in Fig. 1. If the key 15 be now withdrawn, the tumblers 7 will enter the holesvl 8 and will lock the member 9 against turning, lthe primary circuit at this time being open.

I do not limitmy invention to thest'ructure described and shown 'as modifications, within the scope of the appended claims ma be'made withoutdeparting from the spirit of my invention.

Having thus described my invention, what I claim and desire to secure by Letters Patent, is

1. A circuit controlling lock provided with circuit controlling means, a key operated device movable longitudinally and laterlally by a key and when moved laterally to the proper positionl operating the circuit controlling means, means foryieldingly holding said device from longitudinal movement, and means for holding said device from laterally moving until it has been moved longitudinally to a' predetermined position.

2. In a circuit controlling lock, circuit controlling means, a tubular holder having a longitudinal slot and a lateral slot intersecting the longitudinal slot, a key operated device slidable in the longitudinal slot to and from a position in which it will register with the lateral slot and movable in the lateral slot by a key lto a posit-ion in which it will operate the circuit controlling means, and yielding means for normally moving the said device in said longitudinal slot to a position in which it will not register with the lateral slot. I

3. In a circuit controlling lock, circuit controlling means, a device movable longitudinallyand laterally by a key inserted in the lock and when moved laterally to a predetermined position'operating the circuitcontrollingmeans, means for holding the device from lateral movement until it has been moved longitudinally to a certain position, a rotary member having means4 for receiving and being rotated by said key simultaneously with the lateral movement of said device, and means releasable only by a key fitted to the lock for holding said rotary member from turning from either of ,two positions to which it may be turned.

4. In a circuit controlling lock, circuit controlling mens, a device movablex longitudinally and laterally by a key inserted in a lock and when moved laterally to a predetermined position operating the circuit controlling means, means for holdingthe device from lateral movement until it has been oved longitudinally to a predetermined ":pos'itiongyielding means for holding said devicefrom being moved lon itudinally to 5 said position, a rotar member :wingmeans` for receiving and being rotated by said key simultaneously with the lateral movement of said device, and means releasable only by a key fitted to the lok for holding said rotary member from "turning from either of two 10 positions to which it may be turned. In testimony g'rhereof I have signed my name to this specication in presence of two subscribing witnesses. Y

. THOMAS N. BIRCH. Witnesses:

WARREN D. HOUSE, E. B. Home 

